Klim Baja S4 Jacket

*UPDATED FOR 2025

*OLD STYLE NON CURRENT IS 1ST GEN WITHOUT THESE UPDATES*

The second generation Baja S4 Jacket is a breathable mesh jacket born for open deserts, towering sand dunes and humid jungles. Constructed with robust breathable mesh and specially-mapped 4-way stretch panels for unrestricted airflow, the Baja S4 Jacket delivers thorough comfort and mobility for hot weather adventure riding. Baja S4 is now more breathable and more comfortable than ever before, while offering outstanding on-road protection with ceramic-plated SuperFabric®. When paired with a waterproof shell, the Baja S4 kit becomes the ultimate adventure riding setup for maximum versatility.

SHELL

• Schoeller®-dynatec high tenacity mesh main body/arms
• Comfort-mapped mesh chassis for durability, stretch in key locations
• Durable KARBONITE™ micromesh 4-way heavy stretch 1000D CORDURA® in pockets, armpit gussets, waist and cuffs
• Stretch mesh comfort liner in arms and elbow pad pockets
• Durable 750D CORDURA® fabric for collar, cuffs and hem
• SuperFabric® on shoulders/elbows
• Designed to kit with Enduro S4 Jacket for cool/wet weather
• 3M™ Scotchlite™ Carbon Black Reflective Material
• YKK® Zippers
• Pending CE AA Rating certified to EN 17092-3
  

ARMOR

• D3O® CE Level 1 Elbow, Shoulder, Back Pads
• D3O® CE Level 2 upgrade compatible and sold separately
• Removable armor pads
• Kidney belt compatible (sold separately)
• Stretch mesh in elbow armor pad pockets
• Engineered spacer mesh backpad pocket
  

VENTILATION 

• Full-time chassis ventilation through schoeller®-dynatec mesh panels
• Air permeability through KARBONITE™ micromesh stretch zones
• Provides airflow at all speeds
• Collar tab back for increased airflow to upper chest
  

STORAGE

• 1 forearm emergency ID stat card / hidden stash pocket
• 2 zippered hand pockets
• 1 rear large zippered pocket
• 1 concealed document pocket behind backpad
• 2 lower internal zippered stash mesh pockets for airflow
• 1 upper inside chest drop pocket
• 2L Hydrapak® compatible pocket (Hydrapak® sold separately)
• 2 internal hydration hose routing options (over shoulder or under arm)
  

FIT

• Enduro S4 Jacket compatible as overshell
• Comfort mapped mesh shell for unrestricted airflow
• Moisture-wicking antimicrobial anti-odor liner
• DWR treatment sheds water
• Comfort collar liner material
• Micromesh 4-way stretch gusset to stretch over gloves
• 2 quick-adjust forearm straps
• Adjustable bottom hem
• Adjustable VELCRO® cuffs
• Jacket-pant zip connection